Sennheiser GSX 1200 PRO Audio Amplifier for PC and Mac Sample Rate: Main Audio 7.1: 44.1 kHz @16 bit 7.1: 48.0 kHz @16 bit 2.0: 44.1 kHz @16 bit 2.0: 48.0 kHz @16 bit Main Audio HD 2.0: 96.0 kHz @ 24 bit Communication Audio 1.0: 16.0 kHz @16 bit Part: GSX 1200 PRO Dimensions: 2.76 x 5.63 x 5.47 Weight: 0.90 lb. Package Contents: GSX 1200 PRO audio amplifier, chat cable, USB cable, Quick Start Guide, Safety Guide